title: Towards a Hall effect magnetic tracking device for MRI.
abstract: This paper presents the first prototype of a magnetic tracking device for Magnetic Resonance Imaging. The unique relationship between the space coordinates of a MRI scanner bore and the magnetic field gradients used in MRI allows building a localization system based on an accurate measurement of these gradients. These gradients are measured thanks to a 3D Hall device with a footprint of only 50µm(2), integrated with its specific conditioning circuit in a low cost, low voltage 0.35µm CMOS process. The first experimental results show that a sub-millimeter localization is possible. It opens the way to the development of MRI compatible magnetic tracking systems integrable in a surgical tool.
authors.forename: J-B
authors.initials: JB
authors.lastname: Schell
authors.forename: J-B
authors.initials: JB
authors.lastname: Kammerer
authors.forename: L
authors.initials: L
authors.lastname: Hébrard
authors.forename: E
authors.initials: E
authors.lastname: Breton
authors.forename: D
authors.initials: D
authors.lastname: Gounot
authors.forename: L
authors.initials: L
authors.lastname: Cuvillon
authors.forename: M
authors.initials: M
authors.lastname: de Mathelin
mesh_terms: D006801:Humans; D060526:Magnetic Fields; D060328:Magnetic Phenomena; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D019060:Minimally Invasive Surgical Procedures; D012815:Signal Processing, Computer-Assisted